Hi CeCe, my name is Ignacio and I am an independent tour guide here in Belize. If you want to go to San Pedro, there is a booth inside the Tourism Village where you dock from the tenders that bring you off your ship, the people there at the booth arranges flight thru Maya Airways to San Pedro and they even transport you to the Municipal Airstrip to catch your flight out to San Pedro. It is very easy to get to San Pedro. As one person suggested you can even take a water taxi out there but it takes a little longer. To get to the Marina where the water taxis are is only a five minute walk from the Tourism Village, near our famous swing bridge.
You also mentioned suggestions or helpful hints. Well there are many things that you can do in Belize. You can take a City Tour which last for about 1 1/2hrs. then go downtown to do a little shopping if you want (it is much cheaper to shop downtown that at the Tourism Village). You can also visit one of our Mayan sites or go cave tubing. There is also a new museum open that gives you an insite of what Belize looked like in the old days and they even have a replica of a mayan ruin, a gift shop and a restaurant and bar and all this is located right near the sea. So as you can see there is a wide choice and it all depends on you and what you would like to do.
I hope this information is helpful to you, but if you need further info please feel free to contact me at email@example.com